Practice addition, subtraction, multiplication, and division with auto-generated flashcards and scoring.
Choose an operation - addition, subtraction, multiplication, or division - and a difficulty range, and this tool deals flashcards one at a time, each holding a randomly generated problem. You type an answer and it is scored immediately against the correct result, with a running tally of right and wrong for the session. What most users get wrong is expecting to control which facts appear: the draw is random, so narrowing the range shifts the difficulty band, but a specific problem such as 12 x 7 may still never show up in a given run. Treat it as a drill, not a targeted exercise.
A concrete input and expected output from the current implementation.
Input
Settings: multiplication, factors 1 through 9. A card in the session shows '7 x 8'.
Expected output
Entering 56 is scored correct and the session tally advances; entering 54 is scored wrong. 7 x 8 = 56; 54 is the product of 6 x 9, a neighboring fact that is easy to slip into.
The operands are drawn at random from the configured range, so which card appears is not predictable, but the scoring is fixed arithmetic: 7 x 8 is 56 and nothing else counts.
Each card is produced from the operation you selected plus the range you set, so addition and multiplication pick two operands inside the bounds, while subtraction and division need an extra decision about whether results may be negative or leave remainders - check the available options before assuming the tool handles these the way you want. Every card is drawn fresh, so the same problem can legitimately repeat within a run.
Type your answer on the card and the tool compares it with the computed result, marking it right or wrong and updating the running tally. The score is a count of correct answers out of cards answered, so it measures accuracy within that session only: a short run of easy cards can look perfect, and stopping early never lowers the percentage, it just shortens the sample.
Not directly. Cards are generated at random inside the range you set, so a particular problem may never appear and repeats happen only by chance. Narrowing the range concentrates the difficulty band, which is the closest the tool comes to targeting. For a single fact, a paper table chart or writing the fact out repeatedly is more predictable.
No. Each card is generated independently, so a missed problem is scored as a miss and is not queued for a retry; whether it reappears is pure chance. If the tool shows the correct answer after a wrong guess, use that moment to relearn the fact. If it does not, jot the missed facts down and drill them separately.
The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
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